linux-kernel - Re: [RFC][PATCH v2 05/13] usb: otg: add OTG core

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Date:	Wed, 15 Apr 2015 11:29:09 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Roger Quadros <rogerq@...com>
Cc:	gregkh@...uxfoundation.org, balbi@...com,
	stern@...land.harvard.edu, dan.j.williams@...el.com,
	peter.chen@...escale.com, jun.li@...escale.com,
	mathias.nyman@...ux.intel.com, tony@...mide.com,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org
Subject: Re: [RFC][PATCH v2 05/13] usb: otg: add OTG core

(This will go into a minor detail. That's probably not what you want
when posting an RFC. But this patch got caught by an email filter I use
and a future, non-RFC, version will get caught too. So I decided to
bother you with this now.)

On Tue, 2015-04-14 at 13:41 +0300, Roger Quadros wrote:
> --- a/drivers/usb/common/Makefile
> +++ b/drivers/usb/common/Makefile

> +obj-$(CONFIG_USB_OTG_CORE) += usb-otg.o

This creates a module usb-otg.ko if CONFIG_USB_OTG_CORE is 'm', built
from just usb-otg.c.

> --- /dev/null
> +++ b/drivers/usb/common/usb-otg.c

> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License for more details.

> +EXPORT_SYMBOL_GPL(usb_otg_register);

> +EXPORT_SYMBOL_GPL(usb_otg_unregister);

> +EXPORT_SYMBOL_GPL(usb_otg_sync_inputs);

> +EXPORT_SYMBOL_GPL(usb_otg_kick_fsm);

> +EXPORT_SYMBOL_GPL(usb_otg_register_hcd);

> +EXPORT_SYMBOL_GPL(usb_otg_unregister_hcd);

> +EXPORT_SYMBOL_GPL(usb_otg_register_gadget);

> +EXPORT_SYMBOL_GPL(usb_otg_unregister_gadget);
 
> +EXPORT_SYMBOL_GPL(usb_otg_fsm_to_dev);

This code adds no MODULE_LICENSE() macro in this patch and usb-otg.ko
will carry no license field. So I think the loading of that module
(triggered by loading another module that uses one of the exported
symbols, I suppose) taints the kernel. Am I correct?


Paul Bolle

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